Blade opening and closing device for fan lamp

Abstract

The utility model relates to the technical field of fan lamp devices, and discloses a blade opening and closing device for a fan lamp, which comprises a base plate, the back of the base plate is rotatably connected with a turntable, the outer side of the turntable is fixedly connected with fan blades, the front of the turntable is fixedly connected with a connecting column, the front of the base plate is provided with an arc-shaped through groove, and the arc-shaped through groove is fixedly connected with the connecting column. A reset unit is arranged on the outer side of the connecting column and comprises a reset spring, the reset spring is fixedly connected with the connecting column, and the end, away from the connecting column, of the reset spring is fixedly connected with a fixing column. According to the fan lamp, through cooperation of the rotating disc, the connecting column, the arc-shaped through groove, the reset spring and the fixing column, the fan blades can be automatically opened under the action of centrifugal force when the fan lamp operates, stop moving relative to the base plate when reaching the maximum rotating angle, and can be automatically folded to the base plate after the fan lamp is turned off, and the fan lamp is simple in structure and convenient to use. And the production and the maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of fan light device technology, and in particular to a blade opening and closing device for a fan light. Background Technology

[0002] Fan lights are home products that combine lighting and fan functions. They typically offer lighting, fan, and quiet operation, are easy to control, take up little space, and their blades can be retracted onto the fan disc via an opening and closing mechanism when the fan stops working, reducing the risk of blade damage and enhancing their aesthetics.

[0003] A search revealed Chinese Patent Publication No. CN219413013U, which discloses a blade opening and closing device for a fan light. The device includes a base that rotates while the fan light is running, causing the blades to open outwards from a retracted state due to inertia. This opens the corresponding turntables on the base. Simultaneously, the turntables, through the coordination of a first adjusting shaft, a second adjusting shaft, a first limiting groove, and a second limiting groove, ensure that each turntable simultaneously opens its corresponding blades outwards from the base, achieving the effect that the rotation of the base synchronously opens the blades.

[0004] In actual use, the only function of the blade opening and closing device is to allow the blades to open under centrifugal force when the motor starts and to allow the blades to be automatically retracted after the motor stops. The above-mentioned opening and closing device has a complex structure, which is not conducive to production. Too many structures will also affect the maintenance cost and efficiency of the fan light. Therefore, a blade opening and closing device for fan lights is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a blade opening and closing device for a fan light, which aims to improve the problem that the blade opening and closing device in the prior art has a complex structure that is not conducive to production and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a blade opening and closing device for a fan light, comprising a chassis, a turntable rotatably connected to the back of the chassis, a fan blade fixedly connected to the outer side of the turntable, a connecting column fixedly connected to the front of the turntable, an arc-shaped through groove opened on the front of the chassis, and a reset unit provided on the outer side of the connecting column, the reset unit being used to automatically reset the connecting column after it is moved by force.

[0007] As a further description of the above technical solution:

[0008] The reset unit includes a reset spring, which is fixedly connected to a connecting post, and a fixing post is fixedly connected to the end of the reset spring away from the connecting post.

[0009] As a further description of the above technical solution:

[0010] The back of the fixing column is fixedly connected to the front of the chassis.

[0011] As a further description of the above technical solution:

[0012] The fixing column is located on the front of the chassis, near the center of the chassis.

[0013] As a further description of the above technical solution:

[0014] The end of the fan blade furthest from the turntable curves forward, and the fan blade as a whole is designed with an arc shape.

[0015] As a further description of the above technical solution:

[0016] The size of the arc-shaped through groove is adapted to the running trajectory of the connecting column when the turntable rotates.

[0017] As a further description of the above technical solution:

[0018] The connecting column is slidably connected to the inside of the arc-shaped through groove.

[0019] As a further description of the above technical solution:

[0020] The number of turntables is four, and the four turntables are connected to the back of the chassis in a circular array.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the combination of the turntable, connecting column, arc-shaped through groove, reset spring and fixing column allows the fan blades to open automatically under the action of centrifugal force when the fan light is running. When the maximum rotation angle is reached, the fan blades stop moving relative to the chassis. After the fan light is turned off, the fan blades can automatically retract to the chassis. The structure is simple, easy to produce and easy to maintain. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a blade opening and closing device for a fan light proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of the back of a blade opening and closing device for a fan light according to the present invention;

[0025] Figure 3This is a schematic diagram of a turntable, fan blades, and connecting column for a blade opening and closing device for a fan light, as proposed in this utility model.

[0026] Figure 4 This utility model proposes a blade opening and closing device for a fan light. Figure 1 A partial schematic diagram of point A;

[0027] Figure 5 This is a schematic diagram of the front of the turntable of a blade opening and closing device for a fan light proposed in this utility model.

[0028] Legend:

[0029] 1. Chassis; 2. Turntable; 3. Fan blade; 4. Connecting column; 5. Arc-shaped through groove; 6. Return spring; 7. Fixing column. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 This utility model provides an embodiment of a blade opening and closing device for a fan light, including a chassis 1. A turntable 2 is rotatably connected to the back of the chassis 1. The turntable 2 rotates around the connection point with the chassis 1. There are four turntables 2, which are rotatably connected to the back of the chassis 1 in a circular array. A fan blade 3 is fixedly connected to the outer side of the turntable 2. The end of the fan blade 3 away from the turntable 2 is tilted forward. When the fan blade 3 is being stored, one end of the fan blade 3 on the turntable 2 can be placed above the adjacent turntable 2, which can further reduce the storage space and improve the protection effect of the fan blade 3. The fan blade 3 is set with an arc-shaped structure. When rotating at high speed, the airflow enters the fan blade 3 from the leading edge. After being guided by the arc surface, the airflow flows out of the fan blade 3 through the trailing edge, changing the airflow direction and improving the scouring effect, thereby improving the blowing effect of the fan blade 3.

[0032] When the turntable 2 rotates, the fan blades 3 and the turntable 2 will rotate outward and open under the action of the centrifugal force generated by the rotation of the turntable 2. After opening, the fan blades 3 and the turntable 2 can rotate and blow air under the condition of being limited.

[0033] Reference Figures 2-4A connecting column 4 is fixedly connected to the front of the turntable 2. When the turntable 2 rotates, it can drive the connecting column 4 to move synchronously. An arc-shaped through groove 5 is opened on the front of the chassis 1. The size of the arc-shaped through groove 5 is adapted to the running trajectory of the connecting column 4 when the turntable 2 rotates. The connecting column 4 is slidably connected to the inside of the arc-shaped through groove 5. When the connecting column 4 rotates with the turntable 2, it can rotate along the path of the arc-shaped through groove 5 inside the arc-shaped through groove 5. When the connecting column 4 rotates to the end of the path of the arc-shaped through groove 5, it will stop moving. This can limit the turntable 2 and the fan blade 3, so that the fan blade 3 and the turntable 2 are rotated outward by centrifugal force and then stop moving, maintaining the current posture and rotating with the chassis 1 to blow air.

[0034] Reference Figures 3-5 A reset unit is provided on the outside of the connecting column 4. The reset unit includes a reset spring 6, which is fixedly connected to the connecting column 4. A fixing column 7 is fixedly connected to the end of the reset spring 6 away from the connecting column 4. The back of the fixing column 7 is fixedly connected to the front of the chassis 1. The fixing column 7 is located on the side of the front of the chassis 1 near the center of the chassis 1. When the fan blade 3 rotates and opens on the outside, driving the connecting column 4 to move, the connecting column 4 will pull the reset spring 6, causing the reset spring 6 to stretch and generate elastic potential energy. Then, when the chassis 1 stops rotating and the centrifugal force disappears, the connecting column 4 can reset and rotate to the initial position under the action of the elastic potential energy of the reset spring 6, thereby driving the turntable 2 and the fan blade 3 to rotate and reset, so that the fan blade 3 can be retracted back onto the chassis 1 for storage and protection, and improve the aesthetics.

[0035] Working principle: When the fan light is running, the motor drives the chassis 1 to rotate, which in turn drives each turntable 2 and fan blade 3 to rotate synchronously. Under the action of centrifugal force, the fan blade 3 rotates outward and opens. As the fan blade 3 rotates, it drives the turntable 2 and connecting column 4 to rotate synchronously. The connecting column 4 moves inside the arc-shaped through groove 5 and creates resistance. At this time, each fan blade 3 also reaches its maximum rotation angle. While the connecting column 4 is rotating, it pulls the return spring 6, causing the return spring 6 to stretch and generate elastic potential energy. When the fan light stops running, the centrifugal force acting on the fan blade 3 gradually disappears. The connecting column 4 and turntable 2 will rotate and reset under the action of the centrifugal force of the return spring 6, so that the fan blade 3 can retract back onto the chassis 1. The structure is simple, practical, and easy to maintain.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blade opening and closing device for a fan light, comprising a chassis (1), characterized in that: The back of the chassis (1) is rotatably connected to a turntable (2), and a fan blade (3) is fixedly connected to the outside of the turntable (2). A connecting column (4) is fixedly connected to the front of the turntable (2). An arc-shaped through groove (5) is opened on the front of the chassis (1). A reset unit is provided on the outside of the connecting column (4). The reset unit acts to automatically reset the connecting column (4) after it is moved by force.

2. The blade opening and closing device for a fan light according to claim 1, characterized in that: The reset unit includes a reset spring (6), which is fixedly connected to the connecting post (4), and a fixing post (7) is fixedly connected to the end of the reset spring (6) away from the connecting post (4).

3. The blade opening and closing device for a fan light according to claim 2, characterized in that: The back of the fixed column (7) is fixedly connected to the front of the chassis (1).

4. The blade opening and closing device for a fan light according to claim 2, characterized in that: The fixing column (7) is located on the front side of the chassis (1) near the center of the chassis (1).

5. The blade opening and closing device for a fan light according to claim 1, characterized in that: The end of the fan blade (3) away from the turntable (2) is tilted forward, and the fan blade (3) is arranged in an arc shape.

6. The blade opening and closing device for a fan light according to claim 1, characterized in that: The size of the arc-shaped through groove (5) is adapted to the running trajectory of the connecting column (4) when the turntable (2) rotates.

7. The blade opening and closing device for a fan light according to claim 1, characterized in that: The connecting column (4) is internally slidably connected to the arc-shaped through groove (5).

8. The blade opening and closing device for a fan light according to claim 1, characterized in that: The number of turntables (2) is four, and the four turntables (2) are connected to the back of the chassis (1) in a circular array.

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